Hi everyone, I have RSD in my right foot and leg to my knee and also (doctor thinks) I have shingles on top of that..ok, now that I've caught everyone up, two days after I started taking the Valtrex, my LEFT foot and ankle has swollen and hurts if I touch it, no color change yet, the back of my ankle really hurts and has a little scab on it and really hurts like a raw sore burns but its not open, I haven't done anything to it, could the RSD be spreading and can it really go from one foot into the other or does it have to travel a certain way?? I really don't have a clue..thanks for everyone's help on this site...I have learned a lot...Pepper